What kind of bug is this? I am in Hubei, rainy and humid, with many beds.

This photo can't see the details clearly. It looks like medicinal material A or tobacco A.

Sisal is a worldwide storage pest, and its feeding habits are quite complicated. However, it mainly harms grains, oilseeds, dried potatoes, medicinal materials and other storage materials, as well as books and archives. After the medicinal material A develops into an adult, it should stay in the pupa room (cocoon) for about a week, and then break the cocoon out of the pupa room. The body is oval, about 3 mm long, reddish brown to dark chestnut. The head is born under the chest and can't be seen on the back. The front chest backboard is convex and hat-shaped. Compound eyes are big and dark brown. The antenna has 1 1 nodes, and the three terminal nodes are planar triangles. The engraved points on the sheath wings are obvious and arranged in rows vertically.

Lasio derma serricorne (Fabricius) is a member of Arthropoda, Palapoda, Hexapoda, Insecta, Winged Subclass, COLEOPTERA and CERATOPOGONIDAE. Larvae eat tobacco and tea during storage, causing mildew; It can also be eaten in storage such as grain; Eating all kinds of processed grain products has caused serious losses to the tobacco industry. Adults have phototaxis.

Prevention and control methods: (1) Pay attention to the cleanliness of the warehouse, and it is not appropriate to mix old and new grain. (2) The warehouse temperature can be reduced to -3℃ in winter in cold regions, and most larvae will freeze to death after 7 days and nights. (3) When the tobacco leaves are put into storage, the insect situation must be strictly checked. If there are insects, they should be treated first and then put into storage. (4) Tobacco leaves stored for about 2 years should be sealed with plastic film and used intensively as far as possible. When the population density is high, phosphine gas fumigation can be used to control it. (5) In view of the phototaxis of insects, installing insect traps in the warehouse can not only kill pests, but also reduce the pollution of stored cigarettes by insects.